Improvement in extension-table slides



S. B. ALEXANDER. Extension-Table Slides.

No. 196,412. Patented Oct. 23-, 1877.-

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NJETERSv PHO ER. WASHINGTON D C UNITED STATES PATENT OFFICE.

SAMUEL B. ALEXANDER, OF SPRINGFIELD, OHIO.

IMPROVEMENT IN EXTENSION-TABLE SLIDES.

Specification forming part of Letters Patent No. 196,412, dated October23, 1877; application filed July 20, 1877.

To all whom it may concern:

Be it knownthat I, SAMUEL B. ALEXAN- DER, of Springfield, in the coiuityof Clarke and State of Ohio, have invented certain new and usefulImprovements in Extension-Table Slides; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to which. it appertains to make and usethe same, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My present invention is intended as an improvement upon Letters PatentNo. 183,276, granted to me October 17, 1876 and it consists inconstructing the elastic tongue of one piece, instead of in two separatepieces, as will be hereinafter more fully set forth.

In the annexed drawing, Figure 1 is a perspective view of two slidestaken apart. Fig. 2 is a central vertical section of the same when puttogether.

A A are the slides, which are grooved in the usual dovetailed form withgrooves a a. B B are the tongues, constructed in the usual form to fitin said grooves. In each tongue B is formed a central circular recessextending nearly through the same to receive a piece, I), of rubber orother similar elastic material. Through this rubber is passed a screw,.d, which is screwed down into the slide to hold he tongue and also tocompress the rubber.

By this means it will be seen that with a tongue in one piece I obtainan up-and-down pressure, causing the tongue to accommodate itself to thedifferent positions in the slide, hugging or pressing the groove closelyat all times, and, by its elasticity, taking up all lost motion.

A solid or rigid tongue-piece, O, is fastened in the end of the groovein advance of it, to facilitate its introduction when the slides arejoined together.

Having thus fully described my invention,

what I claim asnew, and desire to secure by Letters Patent, is

1. An elastic tongue for extension table slides, constructed of a singlepiece, with a central recess, and a spring of rubber or-its equivalentplaced in said recess, and the tongue fastened by a screw, substantiallyas herein set forth.

2. The grooved dovetail slides A and tongue B, formed in one piece, andhaving a central circular recess, in combination with the rubber b andcentral screw or fastening d, constructed and arranged as and for thepurpose set forth.

In testimony that I claim the foregoing as my own Ihave hereto affixedmy signature in presence of two witnesses.

SAMUEL B. ALEXANDER.

Witnesses J. J. SurTn, W. G. ll/IAYHUGH.

